MASoundData.hpp

/*
 *  This file is part of the AiBO+ project
 *
 *  Copyright (C) 2005-2016 Csaba Kertész (csaba.kertesz@gmail.com)
 *
 *  AiBO+ is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  AiBO+ is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA.
 *
 */

#pragma once

#include "core/MACoreTypes.hpp"

#include <string>

class MCBinaryData;

class MASoundData
{
public:
  static int GetFileDuration(const std::string& file_name);

  static bool LoadFromFile(const std::string& file_name, MC::DoubleList& left_channel,
                           MC::DoubleList& right_channel, int compression = 0, int bitrate = 0);

  static MC::DoubleList ConvertToDouble(const MCBinaryData& raw_data);

  static MCBinaryData* ConvertDoubleToRaw(MC::DoubleList& left_channel, MC::DoubleList& right_channel);

  static void RemoveLeadingTrailingSilence(MC::DoubleList& audio_data, unsigned int sample_rate);

  static MC::DoubleList Resample(const MC::DoubleList& audio_data, int original_frequency, int new_frequency);

  static unsigned int GetWindowSize(unsigned int frequency);

  static bool Join(const MCBinaryData& left_channel, const MCBinaryData& right_channel, MCBinaryData& stereo);

  static float CalculatePowerDb(const MC::DoubleList& audio_data);

  static float CalculateSnr(const float signal_power_db, const float noise_power_db);

  static const int SampleRateOnAIBO;
};